20110019439 - Power supply apparatus with current-sharing function: A power supply apparatus with a current-sharing function includes a conversion circuit, a square-wave generating circuit, a resonant circuit, and a rectifier-filter circuit. The conversion circuit has two transformers, and each of the transformers has a primary winding and two secondary windings. More particularly, two secondary windings of the different... Agent: Hdls Patent & Trademark Services

20110019440 - Bi-directional dc-dc converter and method for controlling the same: A bi-directional DC-DC converter has a transformer for connecting a voltage type full bridge circuit connected to a first power source and a current type switching circuit connected to a second power source. A voltage clamping circuit constructed by switching elements and a clamping capacitor is connected to the current... Agent: Antonelli, Terry, Stout & Kraus, LLP

20110019441 - Method and apparatus for digital control of a switching regulator: In one aspect, a power supply regulator includes a feedback terminal, a node, a control circuit, a first current source, and a second current source. The node is coupled to the feedback terminal to provide a feedback state signal in response to a feedback current through the feedback terminal. The... Agent: Blakely Sokoloff Taylor & Zafman LLP

20110019443 - Series voltage compensator and method for series voltage compensation in electrical generators: Series voltage compensator connected in series between an electrical generator and an electrical grid that comprises a filter and an electronic power converter per phase. The compensator generates a voltage to dynamically compensate for sudden voltage drops in the electrical grid, with it being additionally possible to control the angle... Agent: Moore & Van Allen PLLC

20110019444 - Method and apparatus for detection and control of dc arc faults: A method and apparatus for managing DC arc faults. At least a portion of the method is performed by a controller comprising at least one processor. In one embodiment, the method comprises analyzing a signature of a signal of a power converter and determining, based on analysis of the signature,... Agent: Raymond R. Moser Jr., Esq. MoserIPLaw Group

20110019445 - Method and apparatus for controlling power converter output characteristics: A power converter includes a primary winding for providing a primary current, a secondary winding for providing an output current and an output voltage, and a current sense node for receiving a current sense signal related to the primary current. The power converter also includes a control circuit configured to... Agent: Townsend And Townsend And Crew, LLP

20110019446 - Method and apparatus for a switching mode power supply: A controller for a switched mode power supply (SMPS) is provided. The SMPS is equipped with a transformer having a primary side winding, a secondary winding, and an auxiliary winding. The controller includes a detection circuit for detecting a transition from a first output load condition to a second output... Agent: Townsend And Townsend And Crew, LLP

20110019448 - Switching power supply apparatus: Provided is a switching power supply apparatus capable of suppressing heat generation from a power supply to improve the efficiency of conversion during a power supply operation and accurately detecting only a current flowing through a load to achieve more stabile control. Since a first closed loop made up of... Agent: Hamre, Schumann, Mueller & Larson P.C.

20110019449 - Power converter apparatus: A power converter apparatus having a configuration of a plurality of unit cells, including a DC capacitor and semiconductor devices, connected in cascade, includes a variable voltage source that is connected with a DC link, and a unit having a function that initially charges up the DC capacitor in the... Agent: Antonelli, Terry, Stout & Kraus, LLP

20110019450 - High speed rectifier circuit: Provided is a rectifier circuit that includes a depletion mode semiconductor having an output connected to a rectified signal output node of the rectifier circuit and a hot carrier semiconductor diode having a cathode connected to a source node of the depletion mode semiconductor and an anode connected to a... Agent: Myers Bigel Sibley & Sajovec, P.A.

20110019451 - Power supply auxiliary circuit: A power supply auxiliary circuit includes a power input unit for receiving an AC input voltage, a voltage regulating unit for dropping the AC input voltage, a rectifying unit for converting the dropped AC input voltage into a DC voltage, a snubber unit for filtering the DC voltage, a power... Agent: Lin & Associates Intellectual Property, Inc.

20110019453 - Electric circuit for converting direct current into alternating current: The invention relates to a DC/AC conversion structure, preferably intended for photovoltaic systems, having a high yield across the entire input voltage range thereof, thereby guaranteeing that direct current is not injected into the alternating current network. In a preferred embodiment, the circuit includes six switching elements (T1 to T6)... Agent: Wenderoth, Lind & Ponack, L.L.P.

20110019454 - Drive circuit: The present invention relates to a DC to AC inverter comprising a plurality of voltage controlled switching devices, where one or more of the voltage controlled switching devices is driven by a drive circuit comprising: a bridge switching circuit (59), a transformer (28) with a primary winding (29) and a... Agent: Dann, Dorfman, Herrell & Skillman

01/20/2011 > patent applications in patent subcategories.

20110013424 - Forward converter with secondary side post-regulation and zero voltage switching: The present invention discloses a forward converter with secondary side post-regulation and zero voltage switching, where the primary side power loop may adopt a single or a dual transistor structure, driven by a primary side driving circuit with a constant duty ratio so that the voltage waveform across the secondary... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20110013425 - High step-up ratio soft-switched flyback converter: A converter circuit includes a transformer having a first side and a second side. The converter circuit also includes a switch coupled to the first side of the transformer. The converter circuit further includes a rectifying diode coupled to the second side of the transformer and to a first output... Agent: Munck Carter/nsc

20110013426 - Snubber capacitor generating an auxillary power supply voltage: An integrated circuit (IC) forming a pulse-width modulator controls the switching operation of an output stage of a switching power supply. A snubber capacitor that is coupled to a primary winding of a transformer of the output stage is used for producing a capacitive coupled charging current. The capacitive coupled... Agent: Robert D. Shedd, Patent Operations Thomson Licensing LLC

20110013428 - Modular multi-pulse transformer rectifier for use in asymmetric multi-level power converter: In one embodiment, the present invention includes a system having multiple modular transformers each including a primary winding coupled to an input power source and phase-shifted secondary windings each coupled to a power cell. The system further includes different phase output lines coupled to a load. These lines may include... Agent: Trop, Pruner & Hu, P.C.

20110013427 - Utility grid power averaging and conditioning: As system is disclosed for providing power averaging for the utility grids and more specifically to utilizing a unique EESU unit with the capability to store electrical energy over 24 hour periods each day and provide power averaging to homes, commercial, and industrial sites to reduce the peak power requirements.... Agent: Larson Newman & Abel, LLP

20110013429 - Dc source assemblies: Embodiments of DC source assemblies of power inverter systems of the type suitable for deployment in a vehicle having an electrically grounded chassis are provided. An embodiment of a DC source assembly comprises a housing, a DC source disposed within the housing, a first terminal, and a second terminal. The... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

20110013430 - Power supply apparatus and electronic device having the power supply apparatus: A power supply to improve an EMI characteristic and an electronic device having the power supply. The power supply includes a power converter to convert an alternating current (AC) power applied from outside to a direct current (DC) power, a ground portion to supply a ground power to the power... Agent: Stanzione & Kim, LLP

20110013431 - Switching power conversion circuit and power sypply using same: A switching power conversion circuit receives an input voltage and generates an output voltage to a system circuit. The switching power conversion circuit includes a power circuit, a feedback circuit, a control circuit, and an initiation circuit. The power circuit includes a first switch circuit. The feedback circuit generates a... Agent: Austin Rapp & Hardman

20110013432 - Systems, methods, and apparatus for operating a power converter: Embodiments of the invention can provide systems, methods, and apparatus for operating a power converter. According to one embodiment, a system for operating a power converter can be provided. The system can include a direct current (DC) power source with an output electrically coupled to an input of the power... Agent: Sutherland Asbill & Brennan LLP

20110013434 - Power converter with extremely low standby power consumption: The present invention relates to a power converter with extremely low standby power consumption. The power converter comprises a rectification module having at least one unilateral switch which has a control terminal, an anode terminal and a cathode terminal. The control terminal is coupled to a control signal, wherein when... Agent: Sinorica, LLC

20110013435 - Ac detection circuit for power supply: There is provided an alternating current (AC) detection circuit for power supply, the AC circuit including: a rectifying part rectifying an AC voltage; a voltage division part dividing the voltage rectified by the rectifying part according to a preset division ratio; a voltage stabilization circuit part stabilizing the voltage divided... Agent: Lowe Hauptman Ham & Berner, LLP

20110013436 - Bridgeless pfc circuit system having current sensing circuit and controlling method thereof: The configurations of a bridgeless PFC circuit system and a controlling method thereof are provided. The proposed system includes a bridgeless PFC circuit including a first bridge arm having a first and a second terminals and a first middle point, a second bridge arm having a first and a second... Agent: Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.

20110013437 - Dc-dc converter and its controlling method: A unidirectional DC-DC converter and method of control thereof. The converter includes a DC power-supply, a buck converter circuit having a first main switching element, a boost converter circuit having a second main switching element, a first snubber capacitor, a first inversely-parallel diode, a control device, and an output diode.... Agent: Antonelli, Terry, Stout & Kraus, LLP

20110013438 - inverter topologies usable with reactive power: The present invention generally relates to power electronic switching circuits and in particular to inverter modules employing two or more controlled switches that can be used with reactive loads. An inverter circuit is provided which comprises first and second input terminals for being connected to a DC power source; first... Agent: Michael Best & Friedrich LLP

20110013439 - Power conversion apparatus: A power conversion apparatus comprising a base 110 which includes a first fixation portion 110a and a second fixation portion 110b that are coupled to each other at a desired angle, wherein power modules IPM1, IPM2 and IPM3 are fixed on the first fixation portion 110a of the base 110,... Agent: Sughrue Mion, PLLC

20110013440 - Rectifier circuit: Switches perform switching at a timing when a first phase voltage and a second phase voltage outputted from a three-phase voltage source have a phase difference of 90°. Then, a three-phase/two-phase conversion inductor outputs a pair of AC currents, and a rectification and a single-phase pulse-width modulation are performed on... Agent: Birch Stewart Kolasch & Birch

20110013441 - Static converter and method for starting up the converter: A static converter is disclosed. In at least one embodiment, the static converter includes a power converter circuit which has a plurality of interconnected module branches, wherein each module branch has one or more electrically series-connected two-pole submodules as switchable voltage sources which each include a capacitor as an energy... Agent: Harness, Dickey & Pierce, P.L.C

01/13/2011 > patent applications in patent subcategories.

20110007525 - Biopolar power control: This invention relates to a circuit for controlling a power converter featuring BJTs, through use of a control winding on the transformer that provides the base drive for the BJTs. This controller can control the control winding current, thus modifying the commutating of the current or stopping the oscillations. It... Agent: Carmen Patti Law Group, LLC

20110007526 - Frequency limitation method with time hysteresis used in quasi-resonant control: A frequency limitation method used in quasi-resonant control of a switching regulator is disclosed. The switching frequency is limited through setting a minimum time limit, such as a minimum switching period or a minimum OFF time. The minimum time limit may be a first time limit or a second time... Agent: Perkins Coie LLP Patent-sea

20110007527 - Multi-phase switching power conversion circuit: A multi-phase switching power conversion circuit has at least three phases and includes a plurality of switching circuits, a plurality of transformers, a plurality of output rectifier circuits, a resonant network and a control circuit. The resonant network includes a plurality of symmetrical terminals and a plurality of phase branches,... Agent: Kirton And Mcconkie

20110007529 - Dc-to-dc converter: The present invention includes: a plurality of switching elements connected in series and connected between two ends of a DC power supply; a first control circuit to alternately turn on and off the switching elements in response to a constant oscillation frequency signal; a series circuit including a primary winding... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20110007531 - Direct ac power converting apparatus: A control section controls a current-source converter in a state in which a switch is in conduction, and performs voltage doubler rectification on a voltage between a neutral phase input line and any of input lines to provide for charging of clamp capacitors. Accordingly, the clamp capacitors are charged through... Agent: Birch Stewart Kolasch & Birch

20110007530 - Variable frequency drive soft charge circuit: A variable frequency drive comprises a diode rectifier receiving multiphase AC power and converting the AC power to DC power. An inverter receives DC power and converts the DC power to AC power to drive a load. A link circuit is connected between the diode rectifier and the inverter and... Agent: Wood, Phillips, Katz, Clark & Mortimer

20110007532 - Pwm control device and driving method thereof: In a pulse width modulation (PWM) control device and driving method, the PWM control device includes a PWM device, for providing a plurality of PWM signals; and a controller electrically connected to the PWM device and a plurality of driving circuits, for controlling PWM signals to arbitrarily enable or disable... Agent: Hdls Ipr Services

20110007535 - Method and apparatus for converting ac power to dc power: A method and apparatus for converting AC power to DC power with increased efficiency. One embodiment of the method adjusts the switching frequency of the AC to DC converter base on the load. Another embodiment of the method optimizes the output boost voltage of the AC to DC converter.... Agent: Hewlett-packard Company Intellectual Property Administration

20110007533 - Power factor correction circuit: A power factor correction circuit includes reactors L1 and L2 to accumulate energy of an AC power source and discharge the accumulated energy, a hybrid bridge switch having two diodes D1 and D2 and two switching elements Q1 and Q2 to switch the energy accumulation and energy discharge of the... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20110007534 - Soft switching power electronic transformer: This patent document discloses power electronic transformers having a high-frequency link. An example apparatus include a transformer having a primary winding and a secondary winding, the transformer is configured to receive a primary power signal having a first frequency, a primary converter configured to selectively oscillate polarity of the primary... Agent: Schwegman, Lundberg & Woessner, P.A.

20110007536 - Device for driving inverter: Disclosed is a device for driving an inverter having a semiconductor switching element. A gate voltage calculating unit (20) calculates a surge voltage from the temperature, current, and DC-side voltage of each of IGBTs of the inverter and compares the surge voltage with the breakdown voltage of the element. The... Agent: Oliff & Berridge, PLC

20110007537 - Method and apparatus for single-path control and monitoring of an h-bridge: A method and apparatus for controlling and monitoring an H-bridge via a single communication path. The apparatus comprises a first control and monitor module coupled to a first switch within the H-bridge; and a first pulse transformer coupled to a first control signal to the first control and monitor module,... Agent: Raymond R. Moser Jr., Esq. MoserIPLaw Group

01/06/2011 > patent applications in patent subcategories.

20110002145 - Method of operating a resonant power converter and a controller therefor: A method of operating a resonant power converter(1, 2), having a high side switch(3) and a low side switch(4), is disclosed in which the switching is controlled to allow for improved operation at low power levels. The method involved an interruption to the part of the switching cycle in which... Agent: Nxp, B.v. Nxp Intellectual Property & Licensing

20110002146 - Multiple output switching power source apparatus: A multiple-output switching power source apparatus includes a control circuit to adjust a time for applying a DC voltage to a primary winding of a transformer by turning on/off a switching element Q1, a first rectifying-smoothing circuit for a first secondary winding of the transformer, a second rectifying-smoothing circuit for... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20110002149 - Converter: A converter has a network-side and a load-side power converter that are connected together on the DC side in an electrically conductive manner. An upper and a lower valve branch of each phase module, respectively, of the load-side power converter has at least one two-poled subsystem. At least one multiphase... Agent: Lerner Greenberg Stemer LLP

20110002150 - Rectifier circuit with high efficiency: Disclosed is a rectifier circuit in order to adaptively reduce a threshold voltage of a diode module constituting the rectifier circuit using an output voltage of the rectifier circuit. A PMOS diode module flowing the forward current from an input terminal to an output terminal comprises: a first PMOS transistor... Agent: Pryor Cashman, LLP

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